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In Alteryx Designer 2019.1.4, after adding Browse tools to all of the output anchors of a tool using Right-click > Add All Browses OR Ctrl + Shift + B, running the workflow returns an Unhandled Exception error. The workflow runs indefinitely until Designer is canceled from Windows Task Manager.

The full error is as follows:

An Unhandled Exception occurred.
A previous action may not have completed successfully.
Click OK to send the development team the error log so that we can fix this error in a subsequent release.

The workflow runs indefinitely and cannot be canceled. Closing Designer results in the following dialog:

You will need to exit Designer by ending the process in Windows Task Manager (Ctrl + Alt + Delete).

Environment

Alteryx Designer

Version 2019.1.4

Diagnosis

Confirm your version of Alteryx Designer by navigating to Help > About. If you are using version 2019.1.4, continue. If you are not, your error was likely caused by a different issue. Please open a ticket with customer support through the case portal.

Add All Browses to a tool by Right-click > Add All Browses OR Ctrl + Shift + B, then run the workflow.

The unhandled exception error is returned after the workflow is run.

Cause

In Designer 2019.1.4, there is a known issue where adding multiple browses to a tool simultaneously causes Designer to crash when the workflow is run. This is because when the Browse tools are added, the configuration is not finalized for each tool. A fix is being developed. In the meantime, please see the following workarounds.